Delivery Tunnel North (DTN) and Ash River, Lesotho Highlands Water Project (LHWP)
Client
Trans Caledon Tunnel Authority (TCTA)
The LHWP 2024 Shutdown project was awarded on 9 September 2024 for completion on 31 March 2025, valued at R357.82 million over a six-month contract period. The works involved inspection and repairs of the Delivery Tunnel North (DTN) and erosion protection to the Ash River. Key activities included pre-shutdown preparations such as load testing, pump installation, and valve repairs; grit blasting and relining of steel sections; inspection and repair of concrete-lined sections; refurbishment and reinstallation of valves in the dewatering shaft; gabion repairs and gunniting; inspection and repair of the Ash Outfall; installation of stop logs; and shaping and placing rip rap along Ash River banks. Additional work included gabion repairs at the Caledon Dewatering Shaft and new fencing installation at Little Caledon.
